Method and apparatus for tracking data packets in a packet data communication system

Method and apparatus for tracking data packets in a packet data communication system

A communication system that includes a mobile station (MS) in wireless communication with an infrastructure comprising a Serving GPRS Support Node (SGSN) operably coupled to a Packet Control Unit (PCU) utilizes a synchronization message conveyed by the SGSN to the PCU and a synchronization message a...

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Hauptverfasser: VENKATARAMAN RAMESH, WATWANI MANISH, BODNAR BOHDAN L
Format: Patent
Sprache:eng
Schlagworte:
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
TELEPHONIC COMMUNICATION
TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION
WIRELESS COMMUNICATIONS NETWORKS
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creator VENKATARAMAN RAMESH
WATWANI MANISH
BODNAR BOHDAN L
description A communication system that includes a mobile station (MS) in wireless communication with an infrastructure comprising a Serving GPRS Support Node (SGSN) operably coupled to a Packet Control Unit (PCU) utilizes a synchronization message conveyed by the SGSN to the PCU and a synchronization message acknowledgment conveyed by the PCU to the SGSN to determine the data provided to the MS, to provide corTect accounting information and lost data packet recovery, and to allow the SGSN to control a flow of data packets to the PCU. Furthermore, a synchronization buffer included in the SGSN stores copies of data packets conveyed by the SGSN to the PCU, allowing the SGSN to reconvey lost data packets to the serving PCU and to convey, to a target PCU, data packets conveyed by the SGSN to the serving PCU but not conveyed by the serving PCU to the MS.
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subjects ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
TELEPHONIC COMMUNICATION
TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION
WIRELESS COMMUNICATIONS NETWORKS
title Method and apparatus for tracking data packets in a packet data communication system
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